body, div, dl, dt,dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset,
legend, input, textarea, p, blockquote, th, td, hr, button, article, aside, details,
figcaption, figure, footer, header, hgroup, menu, nav, section, summary 
    margin 0
    padding 0

body 
    font-family  "Microsoft YaHei"   
    max-width: 750px
    margin: 0 auto 

